Tin DioxideNanostructure Gas Sensor for Acetone and Methanol Detection

Osama Abdul Azeez Dakhil, Raad S. Sabry, Safaa Farhood Madlul

Abstract


Simple and efficient technique were successfully used to prepare Tin dioxide (SnO2) nanostructure by simple evaporation method, using single stage horizontal tube furnace under atmosphere pressure and quartz tube with Argon flow without additive. SnO2 thick films were synthesized using simple, homemade, low-cost efficient screen print technique. The thick films were heated at 500 0Cfor one hour to vanish the organic material and any residual impurities. The prepared thick films were investigated using different techniques and apparatus, X-Ray and FESEM to study the structural and morphology of the films, the X-ray results show that the films are polycrystalline with sharp and high intensity peaks indicating high crystalinity of the product. The FESEM Images show homogenous nanostructure with high porosity the dimension range 40-70 nm, optical properties was studied with photoluminescence emission (PL) and transmittance in UV-Visible range. SnO2 sensor was built up by electroding the thick films and used for Acetone and methanol detection.


Keywords


Nanostructure, gas sensor, screens print, thick films, simple evaporation

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DOI: http://dx.doi.org/10.23851/mjs.v27i4.28

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